  \begin{tabular}
    \multicolumn{4}{l}{Nimellisarvot}&\multicolumn{5}{l}{Tyhjakayntikoe}&\multicolumn{3}{l}{Oikosulkukoe}\\ % & \multicolumn{40}{1}{something}
    $S_N$&$=$&$\SI{1000}{\kV\A}$&$U_0$&$=$&$U_{N1}$&$U_k$&$=$&$\SI{360}{\V}$\\
  \end{tabular}
